By 2293, McCoy himself was suffering from mild arthritis due to his advanced age. In that year, when asked by Chang to state his current medical status, McCoy described his health status ("Aside from a touch of arthritis, I'd say pretty good.") rather than his status as a doctor, which was what Chang was asking for. This elicited some laughter from the audience to the murdertrial. (Star Trek VI: The Undiscovered Country)